<script setup>
import {ref,getCurrentInstance,onMounted,reactive} from 'vue'
import * as echarts from "echarts";


const {proxy} = getCurrentInstance()

const getImageUrl=(user)=>{
  return new URL(`../assets/images/${user}.png`,import.meta.url).href
}

//这个tableData是假数据，等会我们使用axios请求mock数据
const tableData = ref([])

const countData = ref([])

const chartData = ref([])

const observer=ref(null)

const tableLabel = ref({
    name: "课程",
    todayBuy: "今日购买",
    monthBuy: "本月购买",
    totalBuy: "总购买",
})


//这个是折线图和柱状图 两个图表共用的公共配置
const xOptions = reactive({
      // 图例文字颜色
      textStyle: {
        color: "#333",
      },
      legend: {
        top: 'top',
        left: 'center'
      },
      grid: {
        left: "20%",
        top: "15%",
      },
      // 提示框
      tooltip: {
        trigger: "axis",
      },
      xAxis: {
        type: "category", // 类目轴
        data: [],
        axisLine: {
          lineStyle: {
            color: "#17b3a3",
          },
        },
        axisLabel: {
          interval: 0,
          color: "#333",
        },
      },
      yAxis: [
        {
          type: "value",
          axisLine: {
            lineStyle: {
              color: "#17b3a3",
            },
          },
        },
      ],
      color: ["#2ec7c9", "#b6a2de", "#5ab1ef", "#ffb980", "#d87a80", "#8d98b3"],
      series: [],
})

const pieOptions = reactive({
  tooltip: {
    trigger: "item",
  },
  legend: {
    top: 0,
  left: 'center',
  orient: 'horizontal',
  textStyle: {
    color: '#333'
  }
  },
  color: [
    "#0f78f4",
    "#dd536b",
    "#9462e5",
    "#a6a6a6",
    "#e1bb22",
    "#39c362",
    "#3ed1cf",
  ],
  series: []
})

const getTableData = async ()=>{
  const data= await proxy.$api.getTableData()
  tableData.value = data.tableData
}

const getCountData = async ()=>{
  const data= await proxy.$api.getCountData()
  // console.log(data)
  countData.value = data
}

const getChartData = async ()=>{
  const {orderData,userData,videoData}= await proxy.$api.getChartData()
  xOptions.xAxis.data=orderData.date
  xOptions.series=Object.keys(orderData.data[0]).map(val=>(
    {
    name:val,
    data:orderData.data.map(item=>item[val]),
    type:'line',
  }
  ))
  const oneEchart = echarts.init(proxy.$refs['echart'])
  oneEchart.setOption(xOptions)

  xOptions.xAxis.data=userData.map(val=>val.date)
  xOptions.series=[
    {
      name: '新增用户',
      data: userData.map(val=>val.new),
      type: 'bar',
    },
    {
      name: '活跃用户',
      data: userData.map(val=>val.active),
      type: 'bar',
    }
  ]
  const twoEchart = echarts.init(proxy.$refs['userEchart'])
  twoEchart.setOption(xOptions)

  //饼状图
  pieOptions.series=[
    {
      data: videoData,
      type: 'pie',
    }
  ]
  const pieEchart = echarts.init(proxy.$refs['videoEchart'])
  pieEchart.setOption(pieOptions)

  //监听页面的变化
  observer.value=new ResizeObserver(()=>{
    oneEchart.resize()
    twoEchart.resize()
    pieEchart.resize()
  })

  //容器存在
  if(proxy.$refs['echart']){
    observer.value.observe(proxy.$refs['echart'])
  }


}

onMounted(()=>{
  getTableData(),
  getCountData(),
  getChartData()
})

</script>

<template>
  <el-row class="home" :gutter="20">
    <el-col :span="8" style="margin-top: 10px">
      <el-card shadow="hover">
        <div class="user">
          <img :src="getImageUrl('user')" class="user"/>
          <div class="user-info">
            <p class="user-info-admin">admin</p>
            <p class="user-info-p">超级管理员</p>
          </div>
        </div>
        <div class="login-info">
          <p>上次登录时间：2022-01-01 10:10:10</p>
          <p>上次登录地点：中国</p>
        </div>
      </el-card>

      <el-card shadow="hover" class="user-table">
        <el-table :data="tableData">
          <el-table-column 
          v-for="(val,key) in tableLabel"
          :key="key"
          :prop="key"
          :label="val"
          >
              
          </el-table-column>
        </el-table>
      </el-card>
    </el-col>
    <el-col :span="16" style="margin-top: 10px">
      <div class="num">
        <el-card 
          :body-style="{display:'flex',padding:0}"
          v-for="item in countData"
          :key="item.name"
          >
          <component :is="item.icon" class="icons" :style="{background:item.color}"></component>
          <div class="detail">
            <p class="num">￥{{item.value}}</p>
            <p class="txt">{{item.name}}</p>
          </div>

        </el-card>
      </div>
      <el-card class="top-echart">
        <div ref="echart" style="height: 230px"></div>
      </el-card>
      <div class="graph">
          <el-card>
            <div ref="userEchart" style="height: 240px"></div>
          </el-card>
          <el-card>
            <div ref="videoEchart" style="height: 240px"></div>
          </el-card>
        </div>
    </el-col>
  </el-row>
</template>

<style scoped lang="less">
.home{
  height: 100%;
  overflow: hidden;
  .user{
    display: flex;
    align-items: center;
    border-bottom: 1px solid #ccc;
    margin-bottom: 20px;
    img{
      width:150px;
      height: 150px;
      border-radius: 50%;
      margin-right: 40px;
    }
    .user-info{
      p{
        line-height: 40px;
      }
      .user-info-p{
        color: #999;
      }
      .user-info-admin{
        font-size: 35px;
      }
    }
  }
  .login-info{
    p{
      line-height: 30px;
      color: #999;
      font-size: 14px;
      span{
        color: #666;
        margin-left: 60px;
      }
    }
  }
  .user-table{
  margin-top:20px;
}
.num{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  .el-card{
    width: 32%;
    margin-bottom: 20px; 
  }
  .icons{
    width: 80px;
    height: 80px;
    text-align: center;
    line-height: 80px;
    font-size: 30px;
    color: #fff;

  }
  .detail{
    margin-left: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    .num{
      font-size: 30px;
      margin-bottom: 10px;
    }
    .txt{
      font-size: 15px;
      text-align: center;
      color: #999;
    }
  }
 }
   .graph{
    margin-top: 15px;
    display: flex;
    justify-content: space-between;
    .el-card{
      width: 48%;
      height: 260px;
    }
  }
}



</style>

